Carnival, Cunard, Holland America are among the big name cruise lines that got big money back from 1 of the pod makers because they were so unreliable. Its a little better now, but pod failures are not uncommon. Not as much as they were when fist made, but they still fail with alarming frequency. The Allure of the Seas recently went into drydock a year early because of a pod failure. I want to say that was Jan of 15.
.